Cisco Systems 12406 series manual Switch Fabric Card Slots, Alarm Card Slots, Chassis Backplane

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Chapter 1 Product Overview

Chassis

Switch Fabric Card Slots

The switch fabric circuitry resides in five fabric card slots: two for CSCs and three for SFCs. (See Figure 1-1.) For more information about the role of the switch fabric circuitry, see the “Multigigabit Crossbar Switch Fabric” section on page 1-10.

Alarm Card Slots

Cisco 12006 and Cisco 12406 routers are equipped with two alarm cards. These cards are positioned beside one another and occupy two card slots directly under the CSC slots. (See Figure 1-1.) For more information about the role of the alarm cards, see the “Alarm Cards” section on page 1-35.

Note The two alarm cards occupy slots under the two CSC slots in the CSC card cage, but are not part of the switch fabric.

Chassis Backplane

All of the card cages are tied together electrically through a passive system backplane in the back of the chassis. Nearly all of the wiring and circuitry in the chassis is contained within or connected to the chassis backplane. The chassis backplane distributes DC power to all of the cards in the chassis as well as the blower module, and provides the physical communication pathway between cards, both for network data and system communication across the internal system maintenance bus (MBus).

 

Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide

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OL-11497-03

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Contents Product Overview IntroductionProduct Description Cisco 12006 and Cisco 12406 router Front View Product Overview Product Description Product Overview Product Description Cisco 12006 and Cisco 12406 router Rear View RP and Line Card Slots Physical and Functional DescriptionChassis Chassis Backplane Switch Fabric Card SlotsAlarm Card Slots Power CoolingMultigigabit Crossbar Switch Fabric Switch Fabric Card TypesNonredundant and Redundant System Configurations Switch Fabric Switching Capacity and Router Type Switch Fabric RedundancyDevice Discovery Maintenance BusPower-Up/Down Control Code Download DiagnosticsEnvironmental Monitoring and Alarms Route Processors Route Processor FunctionsRoute Processor Types Gigabit Route ProcessorProduct Overview Route Processors GRP Layout GRP Memory Components Type Size Quantity Description LocationSram Reset AUX Coll RX Link MII System Status LEDsSoft Reset Switch GRP Alphanumeric LED Displays Partial FaceplatePcmcia Slots Asynchronous Serial PortsEthernet Port Performance Route Processor Performance Route Processor Front ViewProduct Overview Route Processors PRP Horizontal Orientation PRP Memory Components SdramSdram Flash Disk Size Product Number Soft Reset Switch Flash Disk Slots Ethernet PortsLine Cards 10 Sample Line Cards Alarm Cards AlarmAlarm Card Status Alarm Output FunctionClock and Scheduler Card and Switch Fabric Card Status Alarm Relay Contact Connector Power SubsystemsPower Source Monitoring AC Power Subsystem AC PDU12 AC Power Distribution Unit AC-Input Power Supply 13 AC-Input Power SupplyProduct Overview Power Subsystems DC Power Subsystem LED Label Function State Description14 DC Power Distribution Unit Power a DC-Input Power Entry Module16 DC-Input Power Entry Module LED Label Color Function Power Distribution Blower ModuleTop view Air Filters 18 Air Filter LocationsCable-Management System 19 Chassis Cable-Management System Technical Specifications Field-Replaceable Units